Authenticate with Azure .auth/me and AAD Services

To authenticate with Azure .auth/me and AAD Services, you'll need to understand the basics of Azure Active Directory (AAD). Azure .auth/me is a URL that returns information about the current user.

Azure AAD is a cloud-based identity and access management solution that allows you to manage and authenticate users across multiple applications. It's a crucial component of Azure .auth/me.

AAD Services include features like user authentication, authorization, and identity management. These services enable secure access to Azure resources and applications.

Azure .auth/me leverages AAD Services to provide user authentication and authorization capabilities.

Azure Authentication is a zero-code solution for authentication that acts as a gateway in front of your Azure App Service's site or API. It's easy to set up and simple to maintain, with no code involved and everything managed through the Azure portal.

AAD authentication through Azure App Service Authentication is a cost-effective option that eliminates the need to set up an authentication service from scratch. You can use third-party code to get role-based authorization functioning with it.

To access user claims, you can call /.auth/me, which will give you other details on the authenticated user if the token store is enabled for your app.

Accessing user claims via API is a straightforward process. If your app has the token store enabled, you can obtain additional user details by calling /.auth/me.

This method allows you to get more information about the authenticated user. The API call returns the user's claims, which can be used for various purposes such as authorization and user profiling.

To do this, your app must have the token store enabled. This is a requirement for accessing user claims via the API.

AAD authentication through an Azure App Service Authentication is easy to set up and simple to maintain, with no code involved and everything managed through the Azure portal.

It's a zero-code solution for authentication that acts as a gateway in front of your Azure App Service's site/API.

You can implement role-based authorization using Azure App Service easy authentication, but it requires some code configuration when using .NET Core.

Role-based authentication using easy auth is only natively supported for the .NET framework, but third-party middleware such as MaximRouiller's easy auth middleware can solve this issue.

Microsoft.Identity.Web package was recently updated to support Azure "Easy Auth", although some additional translation code is required for the claims principal.

AAD authentication through Azure App Service Authentication is a cost-effective and feasible option for developers, as it eliminates the need to set up an authentication service from scratch.

For ASP.NET 4.6 apps, App Service populates ClaimsPrincipal.Current with the authenticated user's claims. This allows you to follow the standard .NET code pattern, including the [Authorize] attribute.

PHP apps can also use App Service, which populates the _SERVER['REMOTE_USER'] variable. This makes it easy to authenticate users in PHP apps.

Java apps can access the claims through the Tomcat servlet. This is a convenient way to authenticate users in Java apps.

Azure Functions, on the other hand, don't populate ClaimsPrincipal.Current by default. However, you can still find the user claims in the request headers.

For .NET Core apps, Microsoft.Identity.Web supports populating the current user with App Service authentication. This is a great option if you're using .NET Core.

To make claims mapping work, you must enable the Token store. This is a crucial step in setting up authentication with Azure App Service.